Crushing device for coal assay

Abstract

The invention relates to the technical field of coal assay, in particular to a crushing device for coal assay. The crushing device for coal assay comprises a crushing box, a crushing shaft, a crushingmotor, a plurality of rotating plates, a plurality of annular hammers, crushing plates, a separation fan, a screening box and a screening device, wherein the two ends of the crushing shaft are rotationally connected with the inner side wall of the crushing box; the crushing motor is mounted on the rear side of the crushing box; the crushing shaft is evenly sleeved with the plurality of rotating plates; the plurality of annular hammers are rotationally connected with the two ends of the plurality of rotating plates respectively; the two ends of the crushing plate are fixed to the two sides ofa second feeding port respectively; the separation fan is mounted on the left side wall of a discharging pipeline; the air outlet end of the separation fan is communicated with the interior of the discharging pipeline; the top of the screening box is communicated with the bottom end of the discharging pipeline; and the screening device is mounted in the middle of the interior of the screening box.According to the crushing device, the crushing size of coal can be adjusted according to assay requirements, small-particle coal and coal powder which do not meet the assay requirements can be screened, and it is guaranteed that coal assay is conducted smoothly.

Description

technical field [0001] The invention relates to the technical field of coal testing, in particular to a pulverizing device for coal testing. Background technique [0002] The main testing items for coal testing include total sulfur, calorific value, coal moisture (total moisture, analytical water), ash, volatile matter, fixed carbon, carbon, hydrogen, ash melting, slag carbon content, coking coal, petroleum coke, Coal briquettes and related items are mainly for testing the quality of coal. Coal needs to undergo a series of pretreatments such as crushing before testing to facilitate the testing of coal. [0003] The utility model patent with the Chinese patent No. CN210545402U discloses a pulverizing device for coal testing, which is roughly described as: comprising a pole, the upper end of the pole is provided with a connecting block, the lower end of the connecting block is fixedly equipped with a leg, and the The upper end is fixedly connected with the first fixed block,...

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Problems solved by technology

[0003] The utility model patent with the Chinese patent No. CN210545402U discloses a pulverizing device for coal testing, which is roughly described as: comprising a pole, the upper end of the pole is provided with a connecting block, the lower end of the connecting block is fixedly equipped with a leg, and the The upper end is fixedly connected with the first fixed block, the inner side of the upper end of the first fixed block is rotatably connected with the first rotating shaft, the outer side of the first rotating shaft is fixedly connected with the first crushing roller, one side of the first fixed block is fixedly installed with the first motor, The output shaft of the first motor is fixedly connected to the first rotating shaft through a coupling; when using the existing pulverizing device for coal testing, it is found that it controls the size of coal crushing by adjusting the distance between the crushing rollers, which can only control the size of coal crushing. The crushed size does not exceed the set demand value, but the lack of treatment of small particles of coal and coal powder that are much smaller than the demand value produced during the crushing process makes the crushed coal prone to uneven particle sizes, which affects subsequent testing

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